package com.test.xq.customdemo.customtools;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Handler;
import android.os.Message;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;

import com.test.xq.customdemo.R;

/**
 * Created by xq on 17/4/26.
 */

public class CheckView extends View {

    private static final int ANIM_NULL = 0;  //动画状态-没有
    private static final int ANIM_CHECK = 1; //动画状态-开启
    private static final int ANIM_UNCHECK = 2; //动画状态-结束

    private Context mContext;  //上下文
    private int mWidth, mHeight;  //宽高
    private Handler mHandler; //handler

    private Paint mPaint;
    private Bitmap okBitmap;

    private int animCurrentPage = -1;  //当前页数
    private int animMaxPage = 13;  //总页数
    private int animDuration = 500; //动画时长
    private int animState = ANIM_NULL;  //动画状态

    private boolean isCheck = false; //是否只选中状态


    public CheckView(Context context) {
        super(context);
    }

    public CheckView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    /*
    *
    * 初始化
    * */
    private void init(Context context) {
        mContext = context;

        mPaint = new Paint();
        mPaint.setColor(0xffFF5317);
        mPaint.setStyle(Paint.Style.FILL);
        mPaint.setAntiAlias(true);

        okBitmap = BitmapFactory.decodeResource(mContext.getResources(), R.drawable.checkmark);

        mHandler = new Handler() {
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                if (animCurrentPage < animMaxPage && animCurrentPage >= 0) {
                    invalidate();
                    if (animState == ANIM_NULL) {
                        return;
                    }
                    if (animState == ANIM_CHECK) {
                        animCurrentPage++;
                    } else if (animState == ANIM_UNCHECK) {
                        animCurrentPage--;
                    }

                    this.sendEmptyMessageDelayed(0, animDuration / animMaxPage);
                    Log.v("xq_msg", "Count: " + animCurrentPage);
                } else {
                    if (isCheck) {
                        animCurrentPage = animMaxPage - 1;
                    } else {
                        animCurrentPage = -1;
                    }

                    invalidate();
                    animState = ANIM_NULL;
                }
            }
        };
    }

    /*
    *
    * View大小确定
    * */
    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        mWidth =w;
        mHeight =h;
    }

    /*
    *
    * 绘制内容
    *
    * */

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        //将坐标系移到画布中央
        canvas.translate(mWidth/2,mHeight/2);

        //绘制圆形背景
        canvas.drawCircle(0,0,240,mPaint);

        //得到图像的边长
        int sideLength = okBitmap.getHeight();

        //得到图像的选取和实际绘制的位置
        Rect src = new Rect(sideLength*animCurrentPage,0,sideLength*(animCurrentPage+1),sideLength);
        Rect dst = new Rect(-200,-200,200,200);

        //绘制
        canvas.drawBitmap(okBitmap,src,dst,null);
    }


    /*
    *
    * 选择
    * */
    public void check(){
        if(animState != ANIM_NULL || isCheck){
            return;
        }

        animState=ANIM_CHECK;
        animCurrentPage=0;
        mHandler.sendEmptyMessageDelayed(0,animDuration/animMaxPage);
        isCheck =true;
    }

    /*
    *
    * 取消选择
    * */
    public void unCheck(){
        if(animState != ANIM_NULL || (!isCheck)){
            return;
        }
        animState = ANIM_UNCHECK;
        animCurrentPage = animMaxPage-1;
        mHandler.sendEmptyMessageDelayed(0,animDuration/animMaxPage);
        isCheck = false;
    }

    /*
    *
    * 设置动画时长
    * */

    public void setAnimDuration(int animDuration){
        if(animDuration <=0){
            return;
        }
        this.animDuration = animDuration;
    }

    /*
    *
    * 设置背景圆形颜色
    * */
    public void setBackgroundColor(int color){
        mPaint.setColor(color);
    }
}
